Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Feb. 28, 2018	Nov. 30, 2017	Feb. 28, 2017	Aug. 31, 2017
Investments in and Advances to Affiliates [Line Items]
Income tax benefit resulting from the Tax Act	$ 143,900
Effective income tax rate (percent)	(391.50%)		38.00%
Income tax benefit	$ 134,894		$ (13,049)
Motorsports Authentics, Inc. (“MA”)
Investments in and Advances to Affiliates [Line Items]
Deferred tax asset				$ 48,200
Basis in MA used to calculate tax benefit	$ 122,200
Income tax benefit		$ 48,200